I have to replace my ancient gas cooktop and I'm thinking of induction. I've heard a lot of great things, but also want to make sure I'm aware of any drawbacks, as it's a one-way decision, cost-wise. I've heard they "buzz" and they all have noisy fans, but I'm not sure if these are major or minor inconveniences. Has anyone regretted their decision? If so, why? If you like yours, are there any challenges that you have had to learn to live with? Many thanks!